DTC 25: Operation Signal To Water Temperature Gauge
WARNING: This page is about a different car, the 2002 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.
Wait for 2 seconds after selecting DTC 25. If LCD indicates 00, ensure water temperature gauge cycles from "H" to center to "C", and rests back on "H" in 2 second intervals. If water temperature gauge movement is correct, water temperature gauge is okay. If water temperature gauge does not move or movement is not as described, replace instrument cluster. See INSTRUMENT CLUSTER under REMOVAL & INSTALLATION. If LCD indication is 99, replace instrument cluster.